Dynamo-electric machine.



No., 854',321. PATENTED MAY 21, 1907. J. A. WILLIAMS.

DYNAMO'ELEGTRIC MACHINE,

APPLICATION FILED FEB. 28. 1906.

' 2 SHEETS-SHEET 1 its UNITED sTA rEs PATENT OFFICE.

' JOSEPH.A. WILLIAMS, OF CLEVELAND, OHIO,

DYNAMO-ELECTRIC MACHINE Nazis 1,321.

Specification of Letters Patent.

Patented ma 21, 1907;

Application filed February 28, 1906. Serial No. 303,328.

To rtZZ 1071,0772, it may concern:

Be it known that I, JOSEPH A. VVILLIAMS, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of ()hio, have invented a certain new and useful Improvement in Dynamo-Electric Machines, of Which the following is a full,

The object of the invention is to provide an, electric generator which, in addition to being verysimple, in construction and, consequently, very cheap, may be made to pro duce many alternations of the flow of the magnetiolines of force for each revolution and, consequently, many alternations of the induced current in the armature windings.

The invention resides, particularly, in the construction of the armature, which, broadly speaking, comprises the windings, and a rotatable member made of magnetic material mounted to rotate about an axis which is substantially coincident with the axis of the windings. I

The invention also consists in the combination with the pole pieces and their magnets of an armature consisting of windings and a core, made of magnetic material, passing through said windings and mounted so as to rotate upon an axis which is substantially coincident with the axis of the windings, said core being provided with a plurality'of wings -which are arranged one-half on one side and the other half on the opposite side of the armature windings and are so disposed that when any wing on one side of said windings is in juxtaposition with one pole, a wing on the other side of said windings is in juxtaposition with the other pole.

It also consists in an, electric generator having the characteristics last above re ferred to when the armature windings are upon a non-rotatable spool. And it alsocon' sists in such other details of construction as are shown in the drawing and hereinafter de scribed and definitely pointed out in the claims. l

In the drawing, Figure 1 is a front elevation of a machine embodying the invention in a simple form. 2 is abottom plan 'axis of said windings.

view thereof with the ,base plate a removed;

a and Fig. 3 is a sectional side elevation in the plane of line 3-3 of Fig. 1.

Referringto the parts by' letters N and S represent respectively .the north and south pole pieces of the magnets B, which magnets may be permanent inagnetsor electro magnets, as desired. The faces of said pole pieces are curvedfabout the axis of the core D, and

the centers of said apart.

D represents the armature core, and E the armature windings, said windings consisting pole faces are substantially of an insulating s 001 e and wire coils e woifid thereon. T ie armature core is rotatahy mounted between the curved faces of the pole pieces and upon an axis which is coincident with the' axis of curvature of the faces of said pole pieces; and said core passes through the armature windingsth'at is to say, through the spool 2 and the wire coils thereon, in such direction that its axis of rotation is substantially coincident with the C, 0 represent the bearings in which said armature core is mounted. In the construction shown the windings-that is to say, the spool and the coils thereon are stationar fixed toa suitable support 0. It is not, however, of the essence of the broad invention that these windings shall be non-rotatable, although it is a desirable feature of construction, making for simplicity and decreased 7 cost.

The core which must be made of magnetic material, preferably softiron, is provided with four radiating Wings d-d, tWo of said wings, viz., the wings (Z, being at one end of the spool e, and the other two of said wings, viz., the wings d,

,the spool being being at the other endv thereof.- The wings dd extend in opposite directions in the same diametrical plane; and the same is true of the wings dd; but the two diametrical planes in which said wings, lie are at right angles to each other. The pole pieces and wingsbeing arranged as described, it is evident that when one of the Wings (1 is in juxtaposition to theface of. one pole piece, the end of one of the wings 61 will be in juxtaposition to the face of the other pole piece.

The magnetic lines of force flowing from the north pole piece enter one wing, d for example, and flow along the core and through the windings E and out of one of the wings d IIO to the south pole piece, thereby inducing a piece, whereupon current flow in one direction through "the wire e of the coils. As the core continues to rotate it next brings one of the wings d in juxtaposition to north pole piece and one of the wings d in juxtaposition to the southpole from the north pole piece enters said wing d and flows along the core and thence along the wing 11 to the south pole piece, thereby going through the windings E in the opposite direction and inducing; in the wire e of" the windings a current flow in a posite to that first referred to. The device shown has, therefore, a great advantage over other 1nagnetoelectric machines, used for this purpose, especially on automobiles, because such other device do not become sufficiently-active to produce the desired result until they come into rapid rotation, and therefore it is usually necessary to provide an auxiliary 4 tery, to produce the igniting sparks necessary to put the engine into operation Having described my inventioml 1. In a magneto-electric machine, the'combination ot'a nonrotatabl'e-spo,ol on which are armaturewindings, and a rotatable core passed axially through said s 001 and having, at one end of the spool, two diametrically opposed projecting wings, and ,having, at the other end of said spool two-opposedprojecfl ing wings lying in a dia'metncal plane at right angles tothat in'which the other two wings lie, with magnets having polepieces whose faces are concentric with the axis of the magnetic line oilforce" direction which is o'p'-.

device of some sort, as a dry batsaid core,-the distance between the centers of said pole faces being substantially 90.

,inductorcore passed axially through said winding and having 'onone side of the winding diametrically opposed wings and having on the other side of the winding diametrically opposed wings lying in a plane at right angles to that of the first named wings, with magnetic pole pieces on opposite sides of the winding and having faces concentric with the said core, the centers of said pole laces being substantially 909 apart.

3. Ina inachine oi the character described, anon-rotatable armature winding, a rotatable inductor core passed axially ,through said winding and having on one side the ,winding diametrically opposed. wings and having on the other side of said winding diametrically opposed wings lying in a plane at right netic pole pieces on opposite sides of. the winding, here being two pieces of, opposite polarity. on each side of the winding, the pieces on each side of the winding being in the same axial plane with pieces having the same polarity on the opposite side of the winding. In testimony whereof, I hereunto afiix my signature in the presence of two witn esses.

, JOSEPH a. WILLIAMS.

Witnesses: E. B. GILonRIs'r, E.- L." TnURsToN.

' angles to that oi the 'first named wings, inag 

